NSAID hypersensitivity reactions

NSAID (or nonsteroidal anti-inflammatory drug) hypersensitivity reactions encompass a broad range of allergic or allergic-like symptoms that occur within minutes to hours after ingesting aspirin or other NSAID nonsteroidal anti-inflammatory drugs. Hypersensitivity drug reactions differ from drug toxicity reactions in that drug toxicity reactions result from the pharmacological action of a drug, are dose-related, and can occur in any treated individual.

Source: Wikipedia — NSAID hypersensitivity reactions (CC BY-SA 4.0)